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The scientific American reference book [microform] : a compendium of useful information containing the complete census of the United States by counties; map of the United States; views of public buildings; patent and copyright laws; rules and directions for obtaining patents; forms for patents, caveats, assignments, and licenses; hints on the value and sale of patents; tables of the weights and measures of the United States; the principal mechanical movements, with 150 diagrams; history and description of the steam-engine and valuable tables, calculations, problems, etc

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